Police haven't released the names of the deceased as yet, but the station's Web site noted that a spokesman for the San Diego County Medical Examiner's Office has said that the records were sealed at the request of sheriff's deputies.

The station reported that a spokesman said two of the dead were 25. He also said that one was an active-duty Navy while the other was a Navy officer, according to 760KFMB.com, which reported that the office later removed that information from its Web site.

The Los Angeles Times reported that Coronado police responded to a call regarding shots fired in an apartment around 2:30 a.m. Sunday.

That report noted that the Sheriff's Department SWAT squad arrived later to find one body in the doorway, Sheriff's Department Lt. Larry Nesbit told the Times.

Although it is early in the investigation, we do not believe there are any outstanding suspects, Nesbit said.

Authorities used a robotic device to search the apartment and found that there were three more bodies, Nesbit said.